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A kind of goa circuit, tft substrate and display device

A circuit and high-voltage technology, which is applied in the field of GOA circuit, TFT substrate and display device, can solve the problem of GOA circuit instability and achieve the effect of improving stability

Active Publication Date: 2020-06-16
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a GOA circuit, a TFT substrate and a display device to solve the problem of instability of the existing GOA circuit

Method used

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  • A kind of goa circuit, tft substrate and display device
  • A kind of goa circuit, tft substrate and display device
  • A kind of goa circuit, tft substrate and display device

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Embodiment Construction

[0031] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [top], [bottom], [front], [back], [left], [right], [inside], [outside], [side], etc., are only for reference The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In the figures, structurally similar elements are denoted by the same reference numerals.

[0032] see figure 2 , is a schematic structural diagram of the GOA circuit provided by the embodiment of the present invention.

[0033] The GOA circuit provided by the embodiment of the present invention includes a plurality of cascaded GOA units, and the nth level GOA unit includes a pull-up control module 21, a pull-up module 22, a bootstrap module 23, a download ...

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PUM

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Abstract

A GOA circuit, a TFT substrate, and a display device; the GOA circuit comprises a plurality of cascaded GOA units, and an n-level GOA unit comprises: a pull-up control module (21), which is used to input a direct current high voltage VGH1 and to adjust turn-on voltage when an (n-4)-level transmission signal is at a high potential so as to output a stable pull-up control signal Qn, and n>4; and a pull-up module (22), which is used to output a scanning signal Gn of the current level according to the pull-up control signal Qn and a clock signal CKn.

Description

technical field [0001] The invention relates to the technical field of display panels, in particular to a GOA circuit, a TFT substrate and a display device. Background technique [0002] Gate Driver On Array, referred to as GOA, is to use the existing thin film transistor liquid crystal display array process to manufacture the gate row scanning drive signal circuit on the array substrate to realize the driving method of progressive scanning of the gate. [0003] Since GOA technology has the advantages of saving gate chips and realizing narrow edges, and GOA technology has been widely used in panel design, it is particularly necessary to continuously optimize the GOA circuit to make GOA performance more stable. However, if figure 1 As shown, the gate of the thin film transistor T11 in the pull-up control module 11 is connected to the n-4th level scan signal G(n-4), and the drain is connected to the n-4th level transmission signal ST(n-4), When G(n-4) is at a high potential,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
CPCG09G3/3677
Inventor 奚苏萍王添鸿
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD